A mobile terminal includes a housing, a first user interface located on a first face of the housing, a second user interface located on a second face of the housing different from the first face, and a controller within the housing and coupled to the first and second user interfaces. The second user interface includes a touch sensor configured to be used in tandem with the first user interface. The second user interface is positioned on the housing relative to the first user interface such that, when the mobile terminal is held in the user's hand, the first user interface is operable by a thumb and the second user interface is operable by a finger of the same hand. The first user interface is configured to receive a first user input, and the second user interface is configured to receive a second user input. The controller is configured to detect a combination of the received first and second user inputs, and is configured to perform a mobile terminal function associated with the detected combination responsive to detection of the combination. Related user interfaces and methods of operation are also discussed.
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8. A method of operating a handheld mobile terminal, the method comprising:
receiving a first user input via a first user interface located on a first face of a mobile terminal housing, wherein the first user interface includes a physical or virtual button and/or receiving a second user input via a second user interface located on a second face of the mobile terminal housing different from the first face, the second user interface comprising a touch sensor configured to be used in tandem with the first user interface, wherein the second user interface is positioned on the housing relative to the first user interface to enable one-handed operation of the mobile terminal;
performing a mobile terminal function associated with a detected combination of the first and second user inputs responsive to receiving the first and second user inputs; and
performing no mobile terminal functions responsive to receiving the second user input without receiving the first user input,
wherein the button includes at least three alphanumeric characters and/or symbols associated therewith, and wherein performing the mobile terminal function further comprises:
entering a first one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input;
entering a second one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a first direction of motion on the second user interface as the second user input; and
entering a third one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a second direction of motion different from the first direction on the second user interface as the second user input.
1. A mobile terminal, comprising:
a housing sized and configured to be held in a user's hand;
a first user interface located on a first face of the housing and configured to receive a first user input, wherein the first user interface includes a physical or virtual button;
a second user interface located on a second face of the housing different from the first face and configured to receive a second user input, the second user interface comprising a touch sensor configured to be used in tandem with the first user interface, wherein the second user interface is positioned on the housing relative to the first user interface to enable one-handed operation of the mobile terminal; and
a controller within the housing and coupled to the first and second user interfaces, wherein the controller is configured to detect a combination of the received first and second user inputs and perform a mobile terminal function associated with the detected combination responsive to detecting the combination, and wherein the controller is configured to perform no mobile terminal functions responsive to detecting receipt of the second user input without receipt of the first user input such that the second user interface is not configured to be used without the first user interface,
wherein the button includes at least three alphanumeric characters and/or symbols associated therewith, and wherein:
the controller is configured to enter a first one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input;
the controller is configured to enter a second one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a first direction of motion in on the second user interface as the second user input; and
the controller is configured to enter a third one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a second direction of motion different from the first direction on the second user interface as the second user input.
14. A non-transitory computer program product for operating a handheld mobile terminal, the computer program product comprising a computer readable storage medium including computer readable program code embodied therein, wherein, when executed on at least one processor, the computer readable program code causes the at least one processor to:
receive a first user input via a first user interface including a physical or virtual button located on a first face of a mobile terminal housing and/or receive a second user input via a second user interface located on a second face of the mobile terminal housing different from the first face, the second user interface comprising a touch sensor configured to be used in tandem with the first user interface, wherein the second user interface is positioned on the housing relative to the first user interface to enable one-handed operation of the mobile terminal;
perform a mobile terminal function associated with a detected combination of the first and second user inputs responsive to receiving the first and second user inputs; and
perform no mobile terminal functions responsive to receiving the second user input without receiving the first user input such that the second user interface is not configured to be used without the first user interface
wherein the button includes at least three alphanumeric characters and/or symbols associated therewith, and wherein the computer readable program code further causes the at least one processor to:
enter a first one of the associated, characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input;
enter a second one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a first direction of motion on the second user interface as the second user input; and
enter a third one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a second direction of motion different from the first direction on the second user interface as the second user input.
2. The mobile terminal of
3. The mobile terminal of
4. The mobile terminal of
5. The mobile terminal of
6. The mobile terminal of
7. The mobile terminal of
9. The method of
operating the first user interface responsive to a thumb of the user's hand to provide the first user input; and
operating the second user interface responsive to a finger of the same hand to provide the second user input and enable one-handed operation of the mobile terminal.
10. The method of
11. The method of
12. The method of
detecting the combination of the first and second user inputs responsive to receiving the first and second user inputs substantially concurrently via the first and second user interfaces, respectively.
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This application claims priority from U.S. Provisional Application Ser. No. 61/018,094 filed Dec. 31, 2007, the disclosure of which is hereby incorporated by reference herein in its entirety.
The present invention relates to mobile terminals and methods of operating the same.
Portable electronic devices, such as mobile terminals, increasingly provide a variety of communications, multimedia, and/or data processing capabilities. For example, mobile terminals, such as cellphones and personal digital assistants, may provide access to data in a wide variety of multimedia formats, including text, pictures, music, and/or video.
Text entry in mobile terminals may be difficult due to the limited input devices provided by mobile terminals. For example, while some computing devices, such as personal computers, may include a full QWERTY keyboard for alphanumeric text entry, some mobile terminals may be equipped with limited keyboards, where one key can represent more than one alphanumeric character. One such system, known as multi-tap, typically allows users to enter text using a conventional telephone key pad by pressing a key a varying number of times to cycle through several alphanumeric characters associated with the particular key.
New sensing technologies have been developed that may alter the way a user interacts with mobile terminals and/or other handheld electronic devices. For example, touch sensitive hardware, such as capacitance-sensing touch sensors, can sense the size and motion of various touch-based user inputs. Many conventional portable devices may employ such touch sensors as an overlay on top of a liquid crystal display (LCD) screen. For example, Apple's iPhone® includes a capacitance-based touch sensor that can sense single-touch and multi-touch user inputs, and as such, uses only a single physical button in its user interface, which typically functions as a “home” button to bring up the main menu.
According to some embodiments of the present invention, a mobile terminal includes a housing sized and configured to be held in a user's hand, a first user interface located on a first face of the housing and configured to receive a first user input, a second user interface located on a second face of the housing different from the first face and configured to receive a second user input, and a controller within the housing coupled to the first and second user interfaces. The second user interface includes a touch sensor configured to be used in tandem with the first user interface. The second user interface is positioned on the housing relative to the first user interface such that, when the mobile terminal is held in the user's hand, the first user interface is operable by a thumb and the second user interface is operable by a finger of the same hand to enable one-handed operation of the mobile terminal. The controller is configured to detect a combination of the received first and second user inputs and perform a mobile terminal function associated with the detected combination responsive to detecting the combination.
In some embodiments, the second face may be a back of the mobile terminal housing configured to face away from a user during operation of the mobile terminal. Also, the first face may be a front of the mobile terminal housing opposite the back and configured to face toward the user during operation of the mobile terminal.
In other embodiments, the second user interface may be a secondary interface. The controller may be configured to only perform mobile terminal functions responsive to detecting a combination including the first user input.
In some embodiments, the controller may be configured to detect the combination based on first and second user inputs that are received substantially concurrently via the first and second user interfaces, respectively.
In other embodiments, the first user interface may be a keypad configured to detect depression of a button thereof as the first user input.
In some embodiments, the first user interface may be a second touch sensor configured to detect at least one touch and/or direction of motion thereon as the first user input.
In other embodiments, the first and/or second user interfaces may be respectively configured to receive multiple directional inputs and/or multiple touch inputs as the first and/or second user inputs.
In some embodiments, the controller may be configured to capture a predetermined character and/or symbol, launch a program, dial a phone number, navigate a menu, move a cursor, and/or change a setting of the mobile terminal and/or an application thereof associated with the detected combination responsive to detecting the combination.
In other embodiments, the first user interface may include at least one physical and/or virtual button thereon including at least two alphanumeric characters and/or symbols associated therewith. The controller may be configured to enter a first one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input. The controller may be further configured to enter a second one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting at least one touch and/or direction of motion on the second user interface as the second user input.
In some embodiments, the button may include at least three alphanumeric characters and/or symbols associated therewith. The controller may be configured to enter the second one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a first direction of motion in on the second user interface as the second user input. The controller may be further configured to enter a third one of the associated characters and/or symbols responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a second direction of motion different from the first direction on the second user interface as the second user input.
In other embodiments, the controller may be configured to determine a handedness of the user and perform the function responsive to detection of a different combination of the first and second user inputs based on the handedness of the user.
According to further embodiments of the present invention, a method of operating a handheld mobile terminal includes receiving a first user input via a first user interface located on a first face of a mobile terminal housing, and receiving a second user input via a second user interface located on a second face of the mobile terminal housing different from the first face. The second user interface includes a touch sensor configured to be used in tandem with the first user interface. The second user interface is positioned on the housing relative to the first user interface such that, when the mobile terminal is held in the user's hand, the first user interface is operable by a thumb and the second user interface is operable by a finger of the same hand to enable one-handed operation of the mobile terminal. A combination of the received first and second user inputs is detected, and a mobile terminal function associated with the detected combination is performed responsive to detecting the combination.
In some embodiments, when the mobile terminal is held in the user's hand, the first user interface may be operated with a thumb of the user's hand to provide the first user input, and the second user interface may be operated with a finger of the same hand to provide the second user input and to enable one-handed operation of the mobile terminal. For example, the second face may be a back of the mobile terminal housing configured to face away from a user during mobile terminal operation. Also, the first face may be a front of the mobile terminal housing opposite the back and configured to face toward the user during mobile terminal operation.
In other embodiments, no mobile terminal functions may be performed responsive to receiving the second user input without receiving the first user input.
In some embodiments, the combination of the first and second user inputs may be detected responsive to receiving the first and second user inputs substantially concurrently via the first and second user interfaces, respectively.
In other embodiments, the first user interface may be a second touch sensor, and at least one touch and/or direction of motion may be received on the first user interface as the first user input.
In some embodiments, the first user interface may include at least one physical and/or virtual button thereon including at least two alphanumeric characters and/or symbols associated therewith. A first one of the associated characters and/or symbols may be entered responsive to detecting activation of the button on the first user interface as the first user input. A second one of the associated characters and/or symbols may be entered responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting at least one touch and/or direction of motion on the second user interface as the second user input.
In other embodiments, the button may include at least three alphanumeric characters and/or symbols associated therewith. The second one of the associated characters and/or symbols may be entered responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a first direction of motion on the second user interface as the second user input. A third one of the associated characters and/or symbols may be entered responsive to detecting activation of the button on the first user interface as the first user input in combination with detecting a second direction of motion different from the first direction on the second user interface as the second user input.
Although described above primarily with respect to method and electronic device aspects of the present invention, it will be understood that the present invention may be embodied as methods, electronic devices, and/or computer program products.
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which illustrated embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless expressly stated otherwise. It should be further understood that the terms “comprises” and/or “comprising” when used in this specification is taken to specify the presence of stated features, integers, steps, operations, elements, and/or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly coupled” or “directly connected” to another element, there are no intervening elements present. Furthermore, “connected” or “coupled” as used herein may include wirelessly connected or coupled. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items, and may be abbreviated as “/”.
It will also be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first user interface could be termed a second user interface, and, similarly, a second user interface could be termed a first user interface without departing from the teachings of the disclosure.
As will be appreciated by one of skill in the art, the present invention may be embodied as methods, devices, and/or computer program products. Accordingly, the present invention may be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). The program code may execute entirely on a single processor and/or across multiple processors, as a stand-alone software package or as part of another software package.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and/or the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For purposes of illustration, embodiments of the present invention are described herein in the context of a mobile terminal. It will be understood, however, that the present invention is not limited to such embodiments and may be embodied generally as any portable and/or handheld electronic device including multiple user interfaces configured to be used in tandem as described herein.
As used herein, a touch sensor may refer to an electronic input device, such as a touchscreen, that is configured to detect touch and/or motion-based user inputs on an area within which the sensor is bounded. As such, touch sensors as described herein do not encompass button, toggle, or other physical switch-type inputs. Although described herein primarily with reference to capacitance-based touch sensors, it is to be understood that some embodiments of the present invention may employ one or more other touch sensing technologies, such as resistance, surface acoustic wave (SAW), infrared, strain gauge, optical imaging, dispersive signal, acoustic pulse imaging, frustrated total internal reflection, and/or other touch sensing technologies.
Some embodiments of the present invention arise from a realization that mobile terminals including conventional touch sensor-based user interfaces typically require two-handed operation. More particularly, one hand may be used to hold the mobile terminal, while the other hand may be used to touch the user interface. In addition, as the ‘buttons’ on a touch sensor-based user interface may be tactilely indistinguishable, a user may be required to look at the device during text entry. Also, capacitance-based touch sensors may not be ideal for multi-tap text entry, as they may not accurately detect multiple touches in rapid succession. Conventional touch-sensor based user interfaces may thereby require more of the user's focus and/or attention than other types of user interfaces, which may be inconvenient for the user. Accordingly, some embodiments of the present invention provide mobile terminals including multiple user interfaces, one or more of which include a touch sensor, that are configured to be used in tandem to enable one-handed mobile terminal operation. For example, by building in a second touch sensor on the back side of a mobile terminal that includes a touch sensitive display on the front side, combinations of touches on the front and back of the mobile terminal can be used for character/symbol input and/or other mobile terminal functions. As such, mobile terminals including multiple user interfaces according to some embodiments of the present invention may be operated with less user attention, and as such, may offer greater convenience to the user.
The memory 130 may represent a hierarchy of memory that may include volatile and/or non-volatile memory, such as removable flash, magnetic, and/or optical rewritable non-volatile memory. The memory 130 may be configured to store several categories of software, such as an operating system, applications programs, and input/output (I/O) device drivers. The operating system may control the management and/or operation of system resources and may coordinate execution of programs by the controller 140. The I/O device drivers typically include software routines accessed through the operating system by the application programs to communicate with input/output devices, such as those included in the user interfaces 155a-155b, and/or other components of the memory 130.
The controller 140 is coupled to the transceiver 125, the memory 130, the speaker 138, and the user interfaces 155a-155b. The controller 140 may be, for example, a commercially available or custom microprocessor that is configured to coordinate and manage operations of the transceiver 125, the memory 130, the speaker 138, and/or the user interfaces 155a-155b.
As noted above, the mobile terminal 100 includes first and second user interfaces 155a and 155b. The first user interface 155a may include a microphone 120a, a display 110a (such as a liquid crystal display), a touch sensor 115a, a joystick 170a, a keyboard/keypad 105a, a touch-sensitive display 160a (which includes both a display and a touch sensor as an overlay on the display), a dial 175a, a directional navigation key(s) 180a, and/or a pointing device 185a (such as a mouse, trackball, touch pad, etc.). Likewise, the second user interface 155b may similarly include a microphone 120b, a display 110b (such as a liquid crystal display), a touch sensor 115b, a joystick 170b, a keyboard/keypad 105b, a touch-sensitive display 160b (which includes both a display and a touch sensor as an overlay on the display), a dial 175b, a directional navigation key(s) 180b, and/or a pointing device 185b (such as a mouse, trackball, touch pad, etc.). However, depending on functionalities offered by the mobile terminal 100, additional and/or fewer elements of the user interfaces 155a-155b may actually be provided. For instance, the touch-sensitive display 160a may functionally replace the display 110a, the touch sensor 115a, the keypad 105a, and/or the pointing device 185a of the first user interface 155a. More generally, while particular functionalities are shown in particular blocks by way of illustration, functionalities of different blocks and/or portions thereof may be combined, divided, and/or eliminated.
Still referring to
More particularly, as shown in
Referring now to
As such, in response to detecting the combination of the first and second inputs received via the first and second user interfaces 255a and 255b, the mobile terminal controller is configured to perform a mobile terminal function associated with the detected combination of user inputs. For example, where multiple alphanumeric characters and/or symbols are associated with each of the virtual ‘buttons’ 260 on the front 200a of the housing 206, the mobile terminal controller may be configured to capture and/or store a particular character and/or symbol responsive to detecting activation of one of the ‘buttons’ 260 on the first user interface 255a in conjunction with detecting a touch and/or direction of movement on the second user interface 255b along one or more axes 202x and/or 202y.
Other mobile terminal functions, inputs, and/or commands, such as launching programs, speed dialing particular phone numbers, navigating menus, and/or changing mobile terminal and/or application settings, may also be associated with particular combinations of the first and second user inputs. For example, a single tap on the first user interface 255a in combination with a sliding motion on the second user interface 255b along the axis 202y may be associated with a command to launch a media player application. Such functions may also be assigned to particular input combinations by the user in some embodiments. For instance, a user may associate a single tap on the first user interface 255a in combination with a heart-shaped motion on the second user interface 255b as a command to dial the phone number of a spouse and/or significant other, and parameters generated by the first and second user interfaces 255a and 255b responsive to receiving the first and second user inputs may be stored in the mobile terminal memory as being associated with the command to dial the phone number. Also, particular combinations of the first and second inputs received via the first and second user interfaces 255a and 255b may be associated with different functions for different application programs and/or different operating modes of the mobile terminal 200. For example, in the media player application, the single tap on the first user interface 255a in combination with the upward/downward sliding motion on the second user interface 255b along the axis 202y may be associated with volume control. The mapping of such functions to particular combinations of inputs may be stored within the mobile terminal's memory (for example, in lookup tables), and may be accessed by the controller responsive to receiving user inputs via the first and second user interfaces 255a and 255b.
Still referring to
For example, in one configuration, the ‘buttons’ 260 of the first user interface 255a may be configured to display a standard telephone keypad, including different numbers 0-9 and different groups of the letters A-Z associated with each of the ‘buttons’ 260. In a text messaging application program and/or mode of operation, the mobile terminal controller may, for example, detect activation of the ‘5’ key (which is also associated with the letters ‘J’, ‘K’, and ‘L) based on activation of the corresponding button of the first user interface 255a via the user's thumb, and may substantially concurrently detect a sliding motion to the left along the axis 202x based on detection of movement on the second user interface 255b via the user's index finger. As such, the mobile terminal controller may enter the letter “j” in the text messaging application program based on the detected combination, and “j” may be displayed on a screen associated with the first user interface 255a. Similarly, responsive to detecting activation of the ‘5’ key on the first user interface 255a substantially concurrently with detecting a sliding motion to the right along the axis 202x on the second user interface 255b, the mobile terminal controller may enter the letter “l” in the text messaging application program. Likewise, the mobile terminal controller may enter the letter “k” responsive to detecting activation of the ‘5’ key on the first user interface 255a and detecting a single tap and/or no input on the second user interface 255b. Also, a capitalization function may be associated with detected movement along the axis 202y in the text messaging application. For example, responsive to detecting activation of the ‘5’ key on the first user interface 255a substantially concurrently with detecting a diagonal sweeping motion towards the right along the direction 202x and upward along the direction 202y on the second user interface 255b, the mobile terminal controller may enter a capital “L” in the text messaging application program.
The first and second user interfaces 255a and 255b may also be configured to receive multiple touch inputs and/or multiple directional inputs. For instance, the mobile terminal controller may be configured to detect a diagonal motion toward the right and upward followed by a diagonal motion toward the right and downward (i.e., to define a cross) on the second user interface 255b on the back 200b of the mobile terminal housing 206, and may be configured to enter the letter “x” responsive to the detected motions, similar to the Graffiti system of Palm, Inc. The mobile terminal controller may also be configured to detect a handedness (i.e., right-handed or left-handed) of the user based on the detected inputs and/or a based on a user selection, and as such, may re-map the association of particular functions with particular combinations of user inputs received via the first and second user interfaces 255a and 255b based on the handedness of the user.
In some embodiments, the second user interface 255b on the back 200b of the housing 206 may be a secondary interface that is not operable without first receiving an input via the first (e.g., primary) user interface 255a. The tandem use of the first and second user interfaces 255a and 255b may also reduce the likelihood of inadvertent inputs during handling of the mobile terminal 200. For example, a tap on the first user interface 255a may be used to initiate entry of a command, while a subsequent tap on the second user interface 255b may signify completion of the command. As such, the command may include multiple touch and/or direction-based inputs received between the first tap on the first user interface 255a and the second tap on the second user interface 255b, regardless of the time between inputs. In other embodiments, however, the second user interface 255b on the back 200b of the housing 206 may be used alone to input a user command, the results of which may be displayed on a display of the first user interface 255a on the front 200a of the housing.
Although
Although
Computer program code for carrying out operations of devices discussed above with reference to
The present invention is further described hereinafter with reference to a flowchart illustration of methods, mobile terminals, electronic devices, and/or computer program products in accordance with some embodiments of the invention. The flowchart further illustrates exemplary operations that may be performed by a mobile terminal having multiple user interfaces on different sides thereof in accordance with various embodiments of the present invention. It will be understood that each block of the flowchart, and combinations of blocks in the flowchart, may be implemented by computer program instructions and/or hardware operations. These computer program instructions may be provided to a processor of a general purpose computer, a special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks.
These computer program instructions may also be stored in a computer usable or computer-readable memory that may direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer usable or computer-readable memory produce an article of manufacture including instructions that implement the function specified in the flowchart block or blocks.
The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions that execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks.
Still referring to
Accordingly, the mobile terminal function corresponding to the detected combination of the first and second user inputs is performed at Block 530. For example, responsive to receiving a tap on a ‘5’ key of the first user interface (which is also associated with the letters ‘J’, ‘K’, and ‘L’) at Block 500 in conjunction with receiving a sliding motion to the right on the second user interface at Block 510 when executing a text messaging application on the mobile terminal, a user command to input an “L,” in the text messaging application is recognized based on the detected combination at Block 520 and entered/captured in the text messaging application at Block 530 responsive to the detected combination of user inputs. In some embodiments, the second user interface on the back of the mobile terminal housing may be a secondary interface that is not configured to be used without the first user interface, and as such, no mobile terminal functions may be performed responsive to receiving the second user input without receiving the first user input. In other embodiments, however, a mobile terminal function may be performed at Block 530 responsive to detecting a corresponding input from only one of the first or second user interfaces.
The flowchart of
Accordingly, some embodiments of the present invention may enable one-handed and/or blind operation of mobile terminals by employing multiple touch sensors on different sides or faces of the mobile terminal that are configured to be used in combination. More particularly, in some embodiments, a touch-sensitive display is provided on the front of the mobile terminal and a touch sensor is provided on the back of the mobile terminal. The touch sensitive display and the touch sensor are provided in relative positions such that the touch sensitive display is operable by a thumb and the touch sensor is operable by an index finger of the same hand, to provide a novel one-handed interface structure.
In the drawings and specification, there have been disclosed exemplary embodiments of the invention. However, many variations and modifications can be made to these embodiments without substantially departing from the principles of the present invention. Accordingly, although specific terms are used, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined by the following claims.
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